Melting Point Apparatus LDMP-A13 - Touch Screen Melting Point Apparatus Labtron Melting Point Apparatus offers RT to 400°C range with 0.1°C resolution and PID temperature control. Colour touchscreen displays 3 samples with individual and average values and adjustable heating rate 0.1 to 10°C per min. Built-in cooling fan and closed furnace design with RS-232 interface.